Re: Disk Usage (XP Pro)

One possibility is that you have an application with a memory leak and the pagefile is growing to fill the disk.
Can you use Control-Alt-Del to find the Task Manager and look on the Performance Tab to see if page file usage is increasing.

Re: Disk Usage (XP Pro)

You do have a virus-catching program installed, don't you? Could be you've picked up a stinky critter somewhere along the way, if not virus then maybe one of the spyware variety. If you haven't already, you should try AdAware and/or SpyBot, widely talked about here in The Lounge.